import { Injectable } from '@nestjs/common';
import { DashboardService } from '../../dashboard/dashboard.service';
import { AgentBusinessScopeFactory } from '../agent-business-scope.factory';
import type { AgentToolContext, ToolDef, ToolInputResult } from '../agent-tool.types';
import { rejectUnknownKeys } from './tool-input';

@Injectable()
export class GetDashboardStatsTool implements ToolDef<Record<string, never>> {
  readonly name = 'get_dashboard_stats'; readonly requiredPermission = 'dashboard:view';
  readonly description = '获取当前用户数据范围内的学生、班级和今日考勤概览。';
  readonly inputSchema = { type: 'object', properties: {}, additionalProperties: false };
  constructor(private readonly service: DashboardService, private readonly scopes: AgentBusinessScopeFactory) {}
  validate(raw: Record<string, unknown>): ToolInputResult<Record<string, never>> {
    const invalid = rejectUnknownKeys(raw, []); return invalid ?? { ok: true, value: {} };
  }
  execute(_input: Record<string, never>, context: AgentToolContext) {
    return this.service.agentGetDashboardStats(context.userId, this.scopes.canManageAllDashboard(context));
  }
}